package com.syc.handler;

import com.syc.rpc.RpcRequest;
import com.syc.util.ApplicationUtil;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;

import java.lang.reflect.Method;
import java.util.Map;

/**
 * 自定义的业务处理器
 */
public class UserServiceHandler extends ChannelInboundHandlerAdapter {

    //当客户端读取数据时,该方法会被调用
    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {

        //注意:  客户端将来发送请求的时候会传递一个参数:  UserService#sayHello#are you ok
         //1.判断当前的请求是否符合规则
        //if(msg.toString().startsWith("UserService")){
        //    //2.如果符合规则,调用实现类货到一个result
        //    UserServiceImpl service = new UserServiceImpl();
        //    String result = service.sayHello(msg.toString().substring(msg.toString().lastIndexOf("#")+1));
        //    //3.把调用实现类的方法获得的结果写到客户端
        //    ctx.writeAndFlush(result);
        //}
        RpcRequest rpcRequest = (RpcRequest)msg;
        String className = rpcRequest.getClassName();
        Class<?> ClassInterface = Class.forName(rpcRequest.getRequestId());
        Map<String, Object> beanOfType = ApplicationUtil.getBeanOfType(ClassInterface);
        for (Map.Entry<String, Object> entry : beanOfType.entrySet()) {
            Object bean = entry.getValue();
            Class<?> aClass = bean.getClass();
            Method method = aClass.getMethod(rpcRequest.getMethodName(), rpcRequest.getParameterTypes());
            Object result = method.invoke(bean, rpcRequest.getParameters());
            ctx.writeAndFlush(result);
        }

        //RpcRequest rpcRequest = (RpcRequest)msg;
        //String className = rpcRequest.getClassName();
        //Object bean = ApplicationUtil.getBean(className);
        //Class<?> aClass = bean.getClass();
        //Method method = aClass.getMethod(rpcRequest.getMethodName(), rpcRequest.getParameterTypes());
        //Object result = method.invoke(bean, rpcRequest.getParameters());
        //ctx.writeAndFlush(result);
    }
}
